In China's southwestern borderlands lives one of the country's smallest ethnic groups – the Dulong. For generations, extreme poverty shaped life here. Although the area was lifted out of poverty during China's nationwide campaign, its future remains a challenge.

With limited arable land and deep isolation, large-scale farming is not viable. Industrial development is difficult to sustain. So, how does this remote valley hold on to its hard-won gains? In this episode of "From Poverty to Prosperity," our reporter Huang Yichang travels there to find out.